高一英语总复习11
语法精讲:
情态动词(I)
had better,should,ought to
1.had better
had better的意思是最好,后面接动词原形,表示说话人希望对方做什么。had better not则表示说话人希望对方最好不要做什么。
e.g.You had better see a doctor.
你最好找大夫看看。
You had better not go home now.
你现在最好不要回家。
2.should
should通常表示劝告,建议,意思是应该。
e.g.You should keep your promise.
你应该履行诺言。
You should invite him to the party.
你应该邀请他参加舞会。
3.ought to
(1)ought to常用来表示因为有责任、义务,而应该做某事,通常与should意思相近。
e.g.The students ought to obey the school rules.
学生们应遵守校规。
Oughtn't we to give him a chance to try?
我们难道不应该给他一个尝试的机会吗?
(2)ought to也常用来表示劝告或建议,意思是应当,宜于。
e.g.There ought to be more buses during the rush hours.
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